What's the name of a petticoat that can't be split in cheongsam?

A petticoat that can't be split inside a cheongsam is called an inner lining and an inner skirt.

A petticoat that can't be split inside a cheongsam is usually called an inner lining, an inner skirt, a maternity dress or an inner skirt of a cheongsam. The petticoat usually has no slit design, which helps the cheongsam to maintain consistency and integrity, and makes the wearer's leg lines more obvious and the visual beauty stronger.

This kind of petticoat is usually used with cheongsam, and its main function is to increase the cover of cheongsam and avoid indecent situations such as exposure or clothes folding when walking or sitting.